Event: SCCU County Championship: u1850

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Opponent Rating Result
Andrew P Willoughby 1775 ½ - ½
Alexey Markov 1709 ½ - ½
Andrew P Willoughby 1775 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1886 = (5259 + 400 * (1 - 0)) / 3)

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